Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	CO0107496
PWS Name	LYONS TOWN OF
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	2990
County Served	Boulder

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	4003309	Returned to Compliance	01-SEP-2009	30-SEP-2009	Yes
MCL	Maximum Contaminant Level Violation, Monthly (TCR)	Total Coliform Rule	Coliform (TCR)	4003308	Returned to Compliance	01-AUG-2008	31-AUG-2008	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	4003307	Returned to Compliance	01-OCT-2006	31-OCT-2006	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	4002504	Returned to Compliance	01-NOV-2003	30-NOV-2003	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	4002199	Returned to Compliance	01-JUL-1999	31-JUL-1999	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	4002299	Returned to Compliance	01-JUL-1999	31-JUL-1999	No
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3001299	Returned to Compliance	01-JUN-1999	30-JUN-1999	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	3001199	Returned to Compliance	01-MAY-1999	31-MAY-1999	Yes
TT	OCCT/SOWT Treatment Installation/Demonstration	Lead and Copper Rule	Lead and Copper Rule	1400199	Returned to Compliance	01-JAN-1999	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	3000398	Returned to Compliance	01-APR-1998	30-APR-1998	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2000998	Returned to Compliance	01-MAR-1998	31-MAR-1998	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2000898	Returned to Compliance	01-FEB-1998	28-FEB-1998	Yes
TT	OCCT/SOWT Treatment Installation/Demonstration	Lead and Copper Rule	Lead and Copper Rule	3900298	Returned to Compliance	01-JAN-1998	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2000798	Returned to Compliance	01-JAN-1998	31-JAN-1998	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2000698	Returned to Compliance	01-DEC-1997	31-DEC-1997	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2000598	Returned to Compliance	01-NOV-1997	30-NOV-1997	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	1001398	Returned to Compliance	01-OCT-1997	31-OCT-1997	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	1001298	Returned to Compliance	01-SEP-1997	30-SEP-1997	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	4000797	Returned to Compliance	01-AUG-1997	31-AUG-1997	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	1001198	Returned to Compliance	01-JUL-1997	31-JUL-1997	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2000498	Returned to Compliance	01-JUN-1997	30-JUN-1997	Yes
MR	Monitoring, Routine Minor (TCR)	Total Coliform Rule	Coliform (TCR)	3001197	Returned to Compliance	01-JUN-1997	30-JUN-1997	No
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	2000398	Returned to Compliance	01-MAY-1997	31-MAY-1997	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	3000997	Returned to Compliance	01-APR-1997	30-APR-1997	Yes
TT	Public Education	Lead and Copper Rule	Lead and Copper Rule	1901698	Returned to Compliance	01-JAN-1997	-	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	4001196	Returned to Compliance	01-SEP-1996	30-SEP-1996	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	4001096	Returned to Compliance	01-AUG-1996	31-AUG-1996	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	4000996	Returned to Compliance	01-JUL-1996	31-JUL-1996	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	3000596	Returned to Compliance	01-JUN-1996	30-JUN-1996	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	4001595	Returned to Compliance	01-JUL-1995	31-JUL-1995	Yes
TT	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Surface Water Treatment Rule	3001495	Returned to Compliance	01-MAY-1995	31-MAY-1995	Yes
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	4002495	Returned to Compliance	01-APR-1995	30-APR-1995	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate-Nitrite	2928996	Returned to Compliance	01-JAN-1995	31-DEC-1995	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	4002393	Returned to Compliance	01-AUG-1993	31-AUG-1993	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	2910996	Returned to Compliance	01-JAN-1992	31-DEC-1995	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
4040617	4003309	SOX	State Compliance achieved	16-AUG-2010	State	> 6 months compliance
4040613	4003308	SOX	State Compliance achieved	29-APR-2009	State	>6 months without similar violation, SOXd. cj
4040612	4002495	SOX	State Compliance achieved	25-AUG-2008	State	Now SWP system, sv 8/25/08
4040612	4002504	SOX	State Compliance achieved	25-AUG-2008	State	Now SWP system, sv 8/25/08
4040612	4002393	SOX	State Compliance achieved	25-AUG-2008	State	Now SWP system, sv 8/25/08
4040608	3001299	SOX	State Compliance achieved	04-APR-2008	State	>6 mo wo violations. SOXd. aj
4040608	4003307	SOX	State Compliance achieved	04-APR-2008	State	>6 mo wo violations. SOXd. aj
4040608	4002299	SOX	State Compliance achieved	04-APR-2008	State	>6 mo wo violations. SOXd. aj
4040608	3001197	SOX	State Compliance achieved	04-APR-2008	State	>6 mo wo violations. SOXd. aj
4040607	2000998	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	3000398	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	3000596	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	3001199	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	3001495	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	4000797	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	4000996	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	4001096	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	4001196	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	4001595	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	4002199	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	2000898	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	2000798	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	2000698	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	2000598	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	2000498	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	2000398	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	1001398	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	1001298	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	1001198	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4040607	3000997	SOX	State Compliance achieved	05-FEB-2007	State	Maintained compliance for 6 months. 2/5/07 sp
4039101	1400199	SOX	State Compliance achieved	07-DEC-2000	State	-
4039101	3900298	SOX	State Compliance achieved	07-DEC-2000	State	-
4039298	1901698	SOX	State Compliance achieved	31-DEC-1997	State	-
2945396	2928996	SOX	State Compliance achieved	25-MAR-1996	State	-
2945296	2910996	SOX	State Compliance achieved	25-MAR-1996	State	-

1 - 35 of 35

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
PURCHASED WATER FROM LONGMONT	15163	Yes	Consecutive Connection	Surface water	Permanent	Active
NORTH ST VRAIN RIVER	97	Yes	Intake	Surface water	Permanent	Inactive
DISTRIBUTION SYSTEM	6491	No	Distribution System/Zone	-	-	Active
COMBINED RAW SOURCE	13981	No	Sampling Station	-	-	Inactive
APPLE VALLEY STORAGE TANK	13120	No	Storage	-	-	Active
IN TOWN STORAGE TANK	13121	No	Storage	-	-	Inactive
PUMP BOOSTER CHLORINATION STATION	19338	No	Treatment Plant	-	-	Inactive
LYONS SWTP01	3439	No	Treatment Plant	-	-	Inactive

1 - 8 of 8

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
PUMP BOOSTER CHLORINATION STATION	19338	Hypochlorination, Post	Disinfection
LYONS SWTP01	3439	Gaseous Chlorination, Post	Disinfection
LYONS SWTP01	3439	Sedimentation	Particulate removal
LYONS SWTP01	3439	Rapid Mix	Particulate removal
LYONS SWTP01	3439	Flocculation	Particulate removal
LYONS SWTP01	3439	Filtration, Rapid Sand	Particulate removal
LYONS SWTP01	3439	Coagulation	Particulate removal
LYONS SWTP01	3439	Permanganate	Iron removal
LYONS SWTP01	3439	pH Adjustment, Post	Corrosion control

1 - 9 of 9

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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